On Tue, Oct 26, 2021 at 05:33:48PM +0300, Heikki Krogerus wrote:

Hi,

This is the proposal for USB PD character devices that we could use to
communicate USB PD messages directly with the USB PD capable partners,
ports and cable plugs from user space. Originally I proposed this idea
here as a better way to get the PDOs from the partners (and ports and
plugs): https://lkml.org/lkml/2021/10/8/331

You should put the info there (and please use lore.kernel.org in the
future, not lkml.org as we have no control over that site), into this
0/X message as I have no idea _why_ you need a char device and why the
sysfs interface will not work.

So, why not sysfs?  :)

thanks,

greg k-h